Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134153742
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 16, Problem 2FTB
Different versions of the same gene are called ________________. These versions arise as a result of changes in the sequence of _________ that form the gene. These changes are known as _________. An individual with two identical copies of a given gene is described as being _______ for that gene, while an individual with two different versions of that gene is described as ___________.
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Use the following words to complete this statement: phenotype, genotype, heterozygous, homozygous, traits, alleles, genes
Chromosomes contain _______, which help to determine an organisms _____. Genes come in alternate forms called _____, and both parents may not have the same type of allele. The actual gene combination that an organisms receives from its parents is called its_____, while the trait that gets expressed as a result is referred to as its _____. If an offspring receives the same type of allele for a given gene from each parent, it is said to be _____for that trait. If the alleles differ, it is _____.
If our DNA contains all the information about who we are, how can something that does not involve changing the gene sequence cause changes in phenotypes? Describe briefly how these changes happen in an essay with examples
true or false: 
mutations add to genetic variation by producing new alleles.
Chapter 16 Solutions
Biology: Life on Earth Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 16 - The alleles responsible for antibiotic resistance...Ch. 16 - Stabilizing selection on a trait tends to a. make...Ch. 16 - An adaptation is any trait that arises from a...Ch. 16 - 4. Which of the following statements about...Ch. 16 - 5. Genetic drift occurs
a. when different...Ch. 16 - The ________ provides a simple mathematical model...Ch. 16 - 2. Different versions of the same gene are called...Ch. 16 - An organism's ________ refers to the specific...Ch. 16 - 4. A random form of evolution is called _________....Ch. 16 - Competition is most intense between members of...
Ch. 16 - 6. The evolutionary fitness of an organism is...Ch. 16 - 1. What is a gene pool? How would you determine...Ch. 16 - 2. Define equilibrium population. Outline the...Ch. 16 - How does population size affect the likelihood of...Ch. 16 - If you measured the allele frequencies of a gene...Ch. 16 - 5. People like to say that “you can’t prove a...Ch. 16 - 6. Describe the three ways in which natural...Ch. 16 - What is sexual selection? How is sexual selection...Ch. 16 - In North America, the average height of adult...Ch. 16 - By the 1940s, the whooping crane population had...
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- Which term indicates that a single gene has two or more alleles present in a population? A. Point mutation B. Genotype C. Polymorphism D. Pleiotropyarrow_forwardPlease answer fast Which statement about genetic mutations is true? A. Most mutations do not cause changes to an organism’s fitness but will always affect the carrier individual’s physical traits. B. Many genetic mutations are neutral, and do not affect fitness. C. Mutations always create individuals with unique phenotypes, which are either desirable or undesirable in their environment. D. All mutations are fatal to the carrier organism.arrow_forwardWrite a reflection/conclusion about the occurrences of certain hereditary traits, observing similarities or differences in traits between parents and offspring, and identifying which trait is dominant or recessive.arrow_forward
- Genotype, Phenotype, Traits, Allele, Heredity, Dominant, Recessive, Homozygous, Heterozygous, Natural Selection, Polyp, Medusa, Cnidocytes, Ctenophore, Radial Symmetry, Diploblastic, epidermis, endodermis, Cilia, Mesoderm, Chemotaxis Collection of cells on the outside of an organism. Collection of cell lining the inside of an organism. The gene makeup of an organism.arrow_forwardWhich of the following statements describe how genes, proteins, and traits are related? Select all that apply. Proteins carry out activities in the cell that affect traits. Genes carry out functions in the cell that include providing structure and controlling chemical reactions. Genes contain information about traits. The nucleotide sequence of a gene determines the amino acid sequence of a protein. Proteins are molecules in the cell that encode genes. Submitarrow_forwardPlease read the scenario below and answer the question (in bold) that follows: In humans, the ability to roll one's tongue is a dominant trait (T). A woman who can roll her tongue is married to a man who cannot roll his tongue. The couple's daughter, Nia, can roll her tongue though their son, Michael, cannot. What is the genotype of the mother? a. TT b. Tt c. tt d. Either A or B e. Either B or Carrow_forward
- Review the transmission of dominant and recessive traits by filling in the blanks in the following sentences choose from the words in the word bank hint :words may be used more than once.arrow_forwardSome mutations, or changes in the sequence of DNA, do not have any effect on the characteristics of the organism.Why is this?arrow_forwardWhich of the following individuals would be considered to have the greatest evolutionary fitness? a. Olympic speed skater with one child b. an overweight person with three children c. a woman who had six children, none of whom (the children) survived to adulthood d. a single mom who adopted eight childrenarrow_forward
- Since DNA sequences are passed down from one generation to the next, people with closer familial relationship tend to have more of their DNA sequences in common. As a result, people who are more genetically related tend to share some similar patterns in their DNA fingerprinting. If you are comparing samples, which of the following can be determined with DNA fingerprinting? Group of answer choices? right chances Which fraternal twin each sample came from Which identical twin each sample is from If the samples are from people who are married If the samples came from mother and child asap pleasearrow_forwardOne of the following is gene flow: Group of answer choices Because you were born more fat cells, you survive a long ocean voyage, and almost no one else does - just the fatter people, all of whom were born with the ability to make more fat cells. You and the others found a new population. You are good at music so you mate with someone who likes music. You are struck by an asteroid that no one predicted was coming to Earth. You are tall and you marry a short person from your neighborhood.arrow_forwardWhich of the following does not support the idea of descent with modification? A. Organisms and the cells that they are composed of arise from DNA B. When organisms reproduce they generate new copies of DNA to pass down to their offspring C. We inherit traits from our ancestors because in possess molecules of their DNA that you received from your parents D. In the process of DNA replication, mutations occur with the goal of increasing an organism's fitnessarrow_forward
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